The first step to use the quadratic formula is to put your equation into standard form, meaning that you put everything to the left, and in descending order. In this case, you get:
x^2 + 7x + 1 = 0
Which is the same as:
1x^2 + 7x + 1 = 0
So, the coefficients for the quadratic formula are: a = 1, b = 7, c = 1.
x is equal to negative b plus or minus the square root of b squared minus 4 times "a" times "c" all over 2 times "a"
the entire quadratic formula is x is equal to negative b plus or minus the square root b squared minus four(4) a c all over two(2) a (divided by 2)you may have trouble remembering this formula but you can fit it to the tune of pop goes the weasle.here ya go
Unfortunately, the equal sign gets lost in the title. Anyway, you can solve this type of equation using the quadratic formula.
Yes any time 4ac > b2 then x will be a complex numberthe curve represented by that formula will have no x intercepts.Yes.
Using the discriminant formula for a quadratic equation k has a value of 8/25 or maybe 0.
It's equal to positive b squared, or (b x b) .
If it doesn't have an equal sign, then it's an expression, not an equation. The expression 7x2x is quadratic, because it equals 14x², and something is quadratic if it contains the squared exponent ².
Negative sixty-four minus four squared is equal to -80.
All you do is set the quadratic function to equal to 0. Then you can either factor or use the quadratic formula to solve for your unknown variable.
a is the coefficient of the x2 term. If is a = 0, then it is no longer a quadratic - it is just a linear equation, and the quadratic formula will not work to solve it.
it equals positive one. one squared is always one. if they're both negative, negative times negative is always positive.
It is the formula for Pythagoras' theorem for right angle triangles.